ML19326C362
| ML19326C362 | |
| Person / Time | |
|---|---|
| Site: | Crane, Arkansas Nuclear  |
| Issue date: | 10/29/1974 |
| From: | Ziemann D US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Phillips J ARKANSAS POWER & LIGHT CO. |
| References | |
| NUDOCS 8004220905 | |
| Download: ML19326C362 (2) | |
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THIS DOCUMENT CONTAINS DIS M M W :
POOR QlJAUTY PAGES AEC PDR 14 Local PDR Docket File E
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73corter Docket No. 50-313 FAnderson gg JSapir
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ORB #2 Reading RMDiggs Arkansas Power & Light Compan:
OGC ATTN:
Mr. D. Phillips R0 (3)
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Senior Vice President DLZiemann Production, Transmission, and Engineerina ACRS (16)
Sixth am! Pine Streets Pine Eluff, Arkansas 71601 Gentlecen:
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The purpose of this letter is to inform you of a defcet in the Reactor Building Spray Systen at Three Mile Island Unit 1 which resulted in a EEr violation of their Technical Specifications. During recirculation of fluid in the sodito hydroxide storace tank, sodium hydroxide colution entered the sodium thioculfate storage tank reducing the sodium thioculfate
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concentration to a value below the Technical Specification limit. The dilution occurred as a result of Icakage thru a normally closed valve in the inlet line to the codium thiosulfate tank.
Pleace revicsr your deci;;n and operating procedures to determine hether any chan?cs are necessary at Ari nnsas Uucicar One - Unit 1 to redte r - 7.c probability of such an occurrence, and inform us within 30 dayr ei the date of this letter of your conclusions and any proposed changes to your Technical b
Specifications. To assure that such a condition does not go undetected at Arkansas Nuclear One - Unit 1 uc request that in addition to the current Technical Specification curveillance requirenents both the codiun hydroxide and nodian thiosulfate storago tanks he sacpled af ter nakeup or recirculation of either tank until this possibic probica has been investigated and resolved.
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Sincerely, l-hp Dennis L. Ziccann, Chief
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Operating Reactora Branch (2 b.
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Little Rock, Arkansas 72201 lir. William Cavanaugh, III Productio:. Departnent Post Office Box 551 Little Rock, Arkansas 72203 Arkansas Polytechnic College P.ut.sellville, Arkansas' 72801
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